I would like to share with you a great FREE alternative to Thrive Content Builder.
It's Elementor a free drag & drop live page builder.
With Elementor you can create
1) Landing Pages
2) Professional Looking Blog posts & Pages.
3) Thank you & Welcome Pages for your email marketing campaigns
Please Watch the video to see how it works also check out Elementors official site to learn more about all the features. https://elementor.com/
Hope you're having a great day!